本题目来源于试卷: gc textbook chapter 11 Vibrations and Waves，类别为 通用国际物理
[问答题]
A mass hanging from a spring can oscil cq3/ahc 6psdjx) - u5.hpj5yxlate i 8totn9mj4m ci5c*l1in the vertical direction or can swing as a pendu 4coi8l*t1mnct9jm i 5lum of small amplitude, but not both at the same time. Which one is longer, the period of the vertical oscillations or the period of the horizontal swings, and by what amount? [Hint: Let $l_0$ be the length of the unstretched spring, and L be its length with the mass attached at rest.]
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